<?php

namespace App\Livewire\Timesheets;

use App\Models\Timesheet;
use App\Models\JobCard;
use Livewire\Component;
use Livewire\WithPagination;
use Livewire\Attributes\Validate;

class Index extends Component
{
    use WithPagination;

    // Filter properties
    public $selectedTechnician = '';
    public $dateFrom = '';
    public $dateTo = '';
    public $selectedStatus = '';

    // Modal properties
    public $showCreateModal = false;
    public $showEditModal = false;
    public $editingTimesheetId = null;

    // Form properties
    public $form = [
        'user_id' => '',
        'job_card_id' => '',
        'date' => '',
        'start_time' => '',
        'end_time' => '',
        'description' => '',
    ];

    public function mount()
    {
        $this->dateFrom = now()->startOfMonth()->format('Y-m-d');
        $this->dateTo = now()->format('Y-m-d');
        $this->form['date'] = now()->format('Y-m-d');
    }

    public function updatingSelectedTechnician()
    {
        $this->resetPage();
    }

    public function updatingDateFrom()
    {
        $this->resetPage();
    }

    public function updatingDateTo()
    {
        $this->resetPage();
    }

    public function updatingSelectedStatus()
    {
        $this->resetPage();
    }

    public function createTimesheet()
    {
        $this->validate([
            'form.user_id' => 'required|exists:users,id',
            'form.date' => 'required|date',
            'form.start_time' => 'required',
            'form.end_time' => 'nullable|after:form.start_time',
            'form.description' => 'nullable|string|max:1000',
        ]);

        $timesheet = new Timesheet();
        $timesheet->user_id = $this->form['user_id'];
        $timesheet->job_card_id = $this->form['job_card_id'] ?: null;
        $timesheet->date = $this->form['date'];
        $timesheet->start_time = $this->form['date'] . ' ' . $this->form['start_time'];
        
        if ($this->form['end_time']) {
            $timesheet->end_time = $this->form['date'] . ' ' . $this->form['end_time'];
            $timesheet->hours_worked = $this->calculateHours($this->form['start_time'], $this->form['end_time']);
            $timesheet->status = 'completed';
        } else {
            $timesheet->status = 'active';
            $timesheet->hours_worked = 0;
        }
        
        $timesheet->description = $this->form['description'];
        $timesheet->save();

        $this->closeModal();
        session()->flash('message', 'Timesheet entry created successfully.');
    }

    public function editTimesheet($id)
    {
        $timesheet = Timesheet::findOrFail($id);
        $this->editingTimesheetId = $id;
        $this->form = [
            'user_id' => $timesheet->user_id,
            'job_card_id' => $timesheet->job_card_id,
            'date' => $timesheet->date->format('Y-m-d'),
            'start_time' => $timesheet->start_time ? $timesheet->start_time->format('H:i') : '',
            'end_time' => $timesheet->end_time ? $timesheet->end_time->format('H:i') : '',
            'description' => $timesheet->description,
        ];
        $this->showEditModal = true;
    }

    public function updateTimesheet()
    {
        $this->validate([
            'form.user_id' => 'required|exists:users,id',
            'form.date' => 'required|date',
            'form.start_time' => 'required',
            'form.end_time' => 'nullable|after:form.start_time',
            'form.description' => 'nullable|string|max:1000',
        ]);

        $timesheet = Timesheet::findOrFail($this->editingTimesheetId);
        $timesheet->user_id = $this->form['user_id'];
        $timesheet->job_card_id = $this->form['job_card_id'] ?: null;
        $timesheet->date = $this->form['date'];
        $timesheet->start_time = $this->form['date'] . ' ' . $this->form['start_time'];
        
        if ($this->form['end_time']) {
            $timesheet->end_time = $this->form['date'] . ' ' . $this->form['end_time'];
            $timesheet->hours_worked = $this->calculateHours($this->form['start_time'], $this->form['end_time']);
            $timesheet->status = 'submitted';
        } else {
            $timesheet->end_time = null;
            $timesheet->status = 'draft';
            $timesheet->hours_worked = 0;
        }
        
        $timesheet->description = $this->form['description'];
        $timesheet->save();

        $this->closeModal();
        session()->flash('message', 'Timesheet entry updated successfully.');
    }

    public function deleteTimesheet($id)
    {
        Timesheet::findOrFail($id)->delete();
        session()->flash('message', 'Timesheet entry deleted successfully.');
    }

    public function closeModal()
    {
        $this->showCreateModal = false;
        $this->showEditModal = false;
        $this->editingTimesheetId = null;
        $this->form = [
            'user_id' => '',
            'job_card_id' => '',
            'date' => now()->format('Y-m-d'),
            'start_time' => '',
            'end_time' => '',
            'description' => '',
        ];
    }

    private function calculateHours($startTime, $endTime)
    {
        $start = \Carbon\Carbon::createFromFormat('H:i', $startTime);
        $end = \Carbon\Carbon::createFromFormat('H:i', $endTime);
        return $end->diffInHours($start, true);
    }

    public function render()
    {
        $timesheets = Timesheet::with([
                'user',
                'jobCard.customer',
                'jobCard.vehicle'
            ])
            ->when($this->selectedTechnician, function ($query) {
                $query->where('user_id', $this->selectedTechnician);
            })
            ->when($this->dateFrom, function ($query) {
                $query->whereDate('date', '>=', $this->dateFrom);
            })
            ->when($this->dateTo, function ($query) {
                $query->whereDate('date', '<=', $this->dateTo);
            })
            ->when($this->selectedStatus, function ($query) {
                $query->where('status', $this->selectedStatus);
            })
            ->latest('date')
            ->paginate(15);

        $technicians = \App\Models\User::where('role', 'technician')
            ->orWhere('role', 'admin')
            ->orderBy('name')
            ->get();
        $jobCards = JobCard::with('vehicle', 'customer')
            ->where('status', '!=', 'completed')
            ->latest()
            ->limit(50)
            ->get();

        return view('livewire.timesheets.index', compact('timesheets', 'technicians', 'jobCards'));
    }
}